From 4cda248591e776dd22693e12532c0fbb3f586337 Mon Sep 17 00:00:00 2001 From: modeco80 Date: Wed, 8 May 2024 21:33:09 -0400 Subject: [PATCH] qmp: working qmp stuff I really should probably maybehapsibly split this out into a cargo workspace but /shrug, I'll do it if this gets too annoying. I've split out a lot of code into new modules, just to be cleaner about organization. --- Cargo.lock | 1273 +++++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 11 + README.md | 33 -- doc/collabvm.toml | 29 ++ doc/vm.toml | 16 + src/guac.rs | 13 +- src/lib.rs | 5 +- src/main.rs | 37 +- src/qemuvm.rs | 21 + src/qmp/client.rs | 239 +++++++++ src/qmp/io.rs | 36 ++ src/qmp/mod.rs | 5 + src/qmp/result.rs | 19 + src/qmp/types.rs | 28 + src/vm.rs | 9 + 15 files changed, 1734 insertions(+), 40 deletions(-) create mode 100644 doc/collabvm.toml create mode 100644 doc/vm.toml create mode 100644 src/qemuvm.rs create mode 100644 src/qmp/client.rs create mode 100644 src/qmp/io.rs create mode 100644 src/qmp/mod.rs create mode 100644 src/qmp/result.rs create mode 100644 src/qmp/types.rs create mode 100644 src/vm.rs diff --git a/Cargo.lock b/Cargo.lock index 72f4502..25d67f0 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2,6 +2,1279 @@ # It is not intended for manual editing. version = 3 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"c3c52e9c97a68071b23e836c9380edae937f17b9c4667bd021973efc689f618d" +dependencies = [ + "memchr", +] diff --git a/Cargo.toml b/Cargo.toml index 1669d06..3ebabb8 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -4,3 +4,14 @@ version = "0.1.0" edition = "2021" [dependencies] +tokio = { version = "1.37.0", features = ["full"] } +axum = { version = "0.7.5", features = ["tokio"] } +turbojpeg = { version = "1.0.1" } +vnc-rs = "0.5.1" + +toml_edit = "0.22.9" +tracing = "0.1.40" +tracing-subscriber = "0.3.18" +thiserror = "1.0.58" +serde = { version = "1.0.197", features = [ "derive" ] } +serde_json = "1.0.115" diff --git a/README.md b/README.md index 8be5894..e7daa1a 100644 --- a/README.md +++ b/README.md @@ -6,39 +6,6 @@ Stopgap part 4. Mostly made as a experiment, and maybe for production use?. There is none, at the moment. Once there is, there will be actual documentation here. -## Noodling for configuration - -collabvm.toml -```toml -[collabvm] -listen = "127.0.0.1:3000" # or /run/cvm.sock ? if warp supports uds i guess - -# optional -vm_directory = "vms" - -# nested table. you can define it non-nested if you want -mod_permissions = { xxx = true, xyz = false } - -mod_password_hash = "argon2 hash" -admin_password_hash = "argon2 hash" - -# applied to vms by default unless they override -default_motd = "hice powered vms" - -ban_command = "sexy $user $ip" -``` - -vms/vm1.toml -```toml -[vm] -name = "Window XP have honse (VM 1)" - -# cvm1.2-rs will automatically append parameters as needed -command_line = "./vm1.lvm start" - -motd = "YOU HAVE FUCKER GOOGLE FROM 999999999.. Banned!" -``` - # Building `cargo b --release` diff --git a/doc/collabvm.toml b/doc/collabvm.toml new file mode 100644 index 0000000..6631263 --- /dev/null +++ b/doc/collabvm.toml @@ -0,0 +1,29 @@ +listen = "127.0.0.1:3000" # or /run/cvm.sock ? if warp supports uds i guess + +# optional +vm_directory = "vms" + +# nested table. you can define it non-nested if you want +[mod_permissions] +xxx = false +xyz = true + +# passwords hash +mod_password_hash = "md5 hash of password" +admin_password_hash = "md5 hash of password" + +# Command to run to ban a user +# $user is replaced with the user, and +# $ip is replaced with the ip of the user +ban_command = "sexy $user $ip" + +# defaults for all VMs +[default_permissions] +turns_enabled = true +votes_enabled = true +turn_time = 18 +vote_time = 60 +vote_cooldown_time = 120 + +# applied to all vms by default unless they override it in their toml file +motd = "Welcome to my UserVM!" \ No newline at end of file diff --git a/doc/vm.toml b/doc/vm.toml new file mode 100644 index 0000000..ba04fec --- /dev/null +++ b/doc/vm.toml @@ -0,0 +1,16 @@ +# A descriptive name. +name = "Windows XP SP3 x86 (MyVM 1)" + +# cvm1.2-rs will automatically append parameters as needed to the command line +command_line = "/uvm/vms/vm1.lvm start" + +# (Optional) Override the MOTD set in the configuration for this VM only. +motd = "VM 1 MOTD" + +# more overrides. + +#turns_enabled = true +#votes_enabled = true +#turn_time = 18 +#vote_time = 60 +#vote_cooldown_time = 120 \ No newline at end of file diff --git a/src/guac.rs b/src/guac.rs index ff6b109..48d76ad 100644 --- a/src/guac.rs +++ b/src/guac.rs @@ -5,6 +5,8 @@ use std::fmt; // type of a guac message pub type Elements = Vec; +// FIXME: thiserror, please. + /// Errors during decoding #[derive(Debug, Clone)] pub enum DecodeError { @@ -90,7 +92,8 @@ pub fn decode_instruction(element_string: &String) -> DecodeResult { // require a substring (or a slice, but if you can generate a slice bound, // you can also just scan the value in by hand.....) // - // We bound this anyways so it's fine(TM) + // We bound this anyways and do quite the checks, so even though it's not great, + // it should be generally fine (TM). loop { let c = chars[current_position]; @@ -106,10 +109,14 @@ pub fn decode_instruction(element_string: &String) -> DecodeResult { current_position += 1; } - // eat the '.'; our integer scanning ensures - // we only get here in that case + // Eat the '.' seperating the size and the element data; + // our integer scanning ensures we only get here in the case that this is actually the '.' + // character. current_position += 1; + // Make sure the element size doesn't overflow the decode policy + // or the size of the whole instruction. + if element_size >= policy.max_element_size() { return Err(DecodeError::ElementTooLong); } diff --git a/src/lib.rs b/src/lib.rs index c1d2b39..9cf2988 100644 --- a/src/lib.rs +++ b/src/lib.rs @@ -1 +1,4 @@ -pub mod guac; \ No newline at end of file +pub mod guac; +pub mod qmp; +pub mod qemuvm; +pub mod vm; \ No newline at end of file diff --git a/src/main.rs b/src/main.rs index e226533..cf71f1b 100644 --- a/src/main.rs +++ b/src/main.rs @@ -1,5 +1,36 @@ -use cvm12_rs::guac; +use cvm12_rs::{guac, qmp}; -fn main() { - println!("Hello, world!"); +use tokio::net::{UnixSocket, UnixStream}; + +#[tokio::main] +async fn main() { + + let subscriber = tracing_subscriber::FmtSubscriber::builder() + .with_max_level(tracing::Level::TRACE) + .finish(); + + tracing::subscriber::set_global_default(subscriber).expect("You Banned"); + + // This is test code.. + + let stream = UnixStream::connect("/home/lily/vms/xpiss/qmp.sock") + .await + .expect("Could not connect"); + + + let client = qmp::QmpClient::new(stream); + + client.handshake().await.expect("Could not handshake QMP"); + + println!("handshook QMP"); + + // let's try to get all RESET events + let mut rx = client.subscribe_to_event("RESET".into()).await.unwrap(); + + while let Some(message) = rx.recv().await { + println!("Got event! {:?}", message); + } + + + //println!("Hello, world!"); } diff --git a/src/qemuvm.rs b/src/qemuvm.rs new file mode 100644 index 0000000..3792f25 --- /dev/null +++ b/src/qemuvm.rs @@ -0,0 +1,21 @@ + + +// hacked together +pub struct QemuVM { +} + + + +impl QemuVM { + + // fn new()->Self; // spawns manager + // + + +} + +impl Drop for QemuVM { + fn drop(&mut self) { + + } +} \ No newline at end of file diff --git a/src/qmp/client.rs b/src/qmp/client.rs new file mode 100644 index 0000000..97aa6ec --- /dev/null +++ b/src/qmp/client.rs @@ -0,0 +1,239 @@ +//! QMP client. +//! Uses a broadcast channel. + +use std::collections::HashMap; + +use std::time::Duration; + +// TODO +use tokio::{ + io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufStream}, + sync::{mpsc, mpsc::error::TryRecvError, oneshot}, +}; + +use super::{ + result, + io, + types::{self, QmpHandshake}, +}; + +enum QmpClientState { + /// Disconnected. + Disconnected, + + ConnectedToServer, + + /// The server + HandshakingServer, + + /// Handshake passed successfully and we're ready. + Ready, +} + +#[derive(Debug)] +pub enum QmpActorMessage { + /// Close + DoClose, + + QmpDoHandshake { + /// The oneshot response. + tx: oneshot::Sender>, + }, + + /// Used to send a QMP message. + QmpDoSend { + /// The oneshot response. + tx: oneshot::Sender, + }, + + /// Used to subscibe to a QMP event + QmpSubscribeToEvent { + event_name: String, + tx: mpsc::Sender, + }, +} + + + +struct QmpClientActor +where + S: AsyncReadExt + AsyncWriteExt + Unpin + Send, +{ + stream: BufStream, + state: QmpClientState, + + rx: mpsc::Receiver, + + // used to spit out events to subscribed clients + event_tx: HashMap>, + + /// Used for QMP execute messages. This allows us to have multiple commands + /// in flight, and to manually send to all of them. Pretty nifty. + last_response_id: u32, + + /// All in flight responses. + response_tx: HashMap>, +} + +impl QmpClientActor +where + S: AsyncReadExt + AsyncWriteExt + Unpin + Send, +{ + fn new(stream: S, rx: mpsc::Receiver) -> Self { + Self { + stream: BufStream::new(stream), + state: QmpClientState::ConnectedToServer, + rx: rx, + event_tx: HashMap::new(), + last_response_id: 0, + response_tx: HashMap::new(), + } + } + + async fn handshake(&mut self) -> result::Result { + self.state = QmpClientState::HandshakingServer; + let handshake_as_string = io::read_qmp_line(&mut self.stream).await?; + let handshake_json = + serde_json::from_str::(handshake_as_string.as_str())?; + + // Now let's send the handshake. If this errors we're done anyways + let handshake_response = serde_json::json!({ + "execute": "qmp_capabilities" + }); + let serialized = serde_json::ser::to_string(&handshake_response)?; + + io::write_qmp_line(&mut self.stream, &serialized).await?; + + // Read what the server responded back + // FIXME: Make sure it's not an error. + let _handshake_server_response_as_string = io::read_qmp_line(&mut self.stream).await?; +// let handshake_server_response_json = +// serde_json::from_str::(handshake_server_response_as_string.as_str())?; + + self.state = QmpClientState::Ready; + + Ok(handshake_json) + } + + async fn handle_message(&mut self, msg: QmpActorMessage) { + match msg { + QmpActorMessage::DoClose => { + println!("Byes byes!!!") + } + + QmpActorMessage::QmpDoHandshake { tx } => { + let handshake = self.handshake().await; + let _ = tx.send(handshake); + } + + // this can only really fail in a way where it panics i'm pretty sure + QmpActorMessage::QmpSubscribeToEvent { event_name, tx } => { + self.event_tx.insert(event_name.to_uppercase(), tx); + } + + _ => tracing::error!("Unknown message"), + } + } + + async fn run(mut self) { + loop { + tokio::select! { + str = io::read_qmp_line(&mut self.stream) => { + match str { + Ok(val) => { + let res = serde_json::from_str::(val.as_str()).expect("why it not json fucker bing"); + + // Check if this is an event + if let Some(event) = res.get("event") { + let str = String::from(event.as_str().unwrap()); + + // Send the event to the subscriber + if let Some(tx) = self.event_tx.get(&str) { + let _ = tx.send(res).await; + } + } + } + Err(err) => { println!("stream error {err}"); break } + } + }, + + msg_opt = self.rx.recv() => { + if let Some(msg) = msg_opt { + self.handle_message(msg).await; + } else { + break + } + } + + else => break + } + } + } +} + +/// A client for the Qemu Machine Protocol (also known as QMP). +/// Generic so it works with any Tokio stream type (which fits QEMU's ability to run +/// QMP across many protocols). +/// +/// This struct is essentially a handle to an actor. +/// I might maybe refactor this or make some generic "actor" thingmabob but for now +/// it's all in here. +#[derive(Clone)] +pub struct QmpClient { + tx: mpsc::Sender, +} + +impl QmpClient { + /// Creates a new QMP client. + /// + /// ## Notes + /// The stream provided **MUST NOT** have been shut down before being provided (besides, why would you even do that?) + pub fn new(socket: S) -> Self + where + S: AsyncReadExt + AsyncWriteExt + Unpin + Send + 'static, + { + let (tx, rx) = mpsc::channel(8); + let inner = QmpClientActor::new(socket, rx); + + tokio::spawn(async move { inner.run().await }); + + Self { tx } + } + + // TODO handle errors properly + + pub async fn handshake(&self) -> result::Result { + let (tx, rx) = oneshot::channel(); + + let _ = self.tx + .send(QmpActorMessage::QmpDoHandshake { tx: tx }) + .await; + match rx.await { + Ok(res) => res, + Err(err) => { + println!("???? {err}"); + Err(result::QmpError::GeneralFail) + } + } + } + + /// Subscribes to a QMP event. + /// Returns the recvieving arm of a [mpsc::channel] which will recieve + /// the JSON event payloads when an event is sent by the server. + pub async fn subscribe_to_event( + &self, + event_name: String, + ) -> result::Result> { + let (tx, rx) = mpsc::channel(8); + + let _ = self.tx + .send(QmpActorMessage::QmpSubscribeToEvent { + event_name: event_name, + tx: tx, + }) + .await; + + // give the user their rx + Ok(rx) + } +} diff --git a/src/qmp/io.rs b/src/qmp/io.rs new file mode 100644 index 0000000..69476ce --- /dev/null +++ b/src/qmp/io.rs @@ -0,0 +1,36 @@ +use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufStream}; + +use super::result; + +/// Reads a single QMP delimited line. +pub async fn read_qmp_line(stream: &mut BufStream) -> result::Result +where + S: AsyncReadExt + AsyncWriteExt + Unpin + Send, +{ + let mut buf = String::new(); + let n = stream.read_line(&mut buf).await?; + + // should probably actually disconnect + if n == 0 { + return Err(result::QmpError::IoError(std::io::Error::from( + std::io::ErrorKind::UnexpectedEof, + ))); + } + + Ok(buf) +} + +pub async fn write_qmp_line( + stream: &mut BufStream, + string: &String, +) -> result::Result<()> +where + S: AsyncReadExt + AsyncWriteExt + Unpin + Send, +{ + let delimited = format!("{}\n", string); + + stream.write_all(delimited.as_bytes()).await?; + stream.flush().await?; + + Ok(()) +} \ No newline at end of file diff --git a/src/qmp/mod.rs b/src/qmp/mod.rs new file mode 100644 index 0000000..72815e5 --- /dev/null +++ b/src/qmp/mod.rs @@ -0,0 +1,5 @@ +pub(crate) mod types; +pub mod result; +pub(crate) mod io; +pub mod client; +pub use client::*; \ No newline at end of file diff --git a/src/qmp/result.rs b/src/qmp/result.rs new file mode 100644 index 0000000..92dcf9c --- /dev/null +++ b/src/qmp/result.rs @@ -0,0 +1,19 @@ +use thiserror::Error; + +/// QMP library error. +#[derive(Error, Debug)] +pub enum QmpError { + #[error(transparent)] + IoError(#[from] tokio::io::Error), + + #[error(transparent)] + DecodingError(#[from] std::string::FromUtf8Error), + + #[error(transparent)] + JsonError(#[from] serde_json::Error), + + #[error("general failure")] + GeneralFail, +} + +pub type Result = std::result::Result; \ No newline at end of file diff --git a/src/qmp/types.rs b/src/qmp/types.rs new file mode 100644 index 0000000..efd3917 --- /dev/null +++ b/src/qmp/types.rs @@ -0,0 +1,28 @@ +//! Strong typed QMP messages (For the most part)... +use serde::{Deserialize, Serialize}; + +#[derive(Deserialize, Debug)] +pub struct QmpHandshakeSemVer { + pub major: i32, + pub minor: i32, + pub micro: i32, +} + +#[derive(Deserialize, Debug)] +pub struct QmpHandshakeQMPVersion { + pub qemu: QmpHandshakeSemVer, + pub package: String, +} + +/// "QMP" object +#[derive(Deserialize, Debug)] +pub struct QmpHandshakeQMP { + pub version: QmpHandshakeQMPVersion, + pub capabilities: Vec, +} + +#[derive(Deserialize, Debug)] +pub struct QmpHandshake { + #[serde(rename = "QMP")] + pub qmp: QmpHandshakeQMP, +} \ No newline at end of file diff --git a/src/vm.rs b/src/vm.rs new file mode 100644 index 0000000..1dcc99d --- /dev/null +++ b/src/vm.rs @@ -0,0 +1,9 @@ + +struct VMUser { + +} + +// holds a qemuvm::QemuVM, (maybe) broad +pub struct VM { + +} \ No newline at end of file